Kia ora from the Lyttelton Harbour Wastewater Project team. You will have seen us at work in Lyttelton as we as we prepare the site for the new Simeon Quay pump station. You will also see us across the hill in Heathcote and Woolston, setting up our project sites for the final stage of this project. Thank you all for your patience as we work towards ending the routine discharge of treated wastewater into Lyttelton Harbour.

Simeon Quay Pump Station

The site at Simeon Quay has been established and we have started site clearance and minor excavation. Over the coming months, this site will transformed into a new pump station, the powerhouse which will pump Lyttelton Harbour’s wastewater through an existing pipeline along Lyttelton Tunnel. This will connect with the soon-to-be constructed Heathcote Valley pipeline and link to an existing pump station in Woolston.

Digging deep on Simeon Quay

This hole in the ground is just the start of a 5 metre deep hole that will house a concrete wet well. Once built, it will collect wastewater and send it through the tunnel’s new pumps to connect with the new Heathcote Valley Pipeline. We're drilling through ground rock so there will be a bit of noise but we'll do our best to dig quickly to minimise any disruption.

Moving the Bridle Path to Simeon Quay stairway

To ensure this popular stairway stays open and to keep pedestrians safe while trucks are entering the worksite, our project team have come up with a win-win solution.

We're going to install a temporary stairway to provide a safe pathway while works are undertaken on the existing retaining wall, stairway and site road access.

This way, you'll be able to safely access Simeon Quay from Bridle Path.

Temporary stairway design

Map of the Heathcote Valley Pipeline

This is the route of the underground pipeline that will run through Heathcote Valley to the pump station in Alport Place in Woolston. This is the fourth and final phase of the Lyttelton Harbour Wastewater Project.

Heathcote Valley pipline hyro-exacavation works

This month we'll be carrying out hydro-excavation works in various parts of Heathcote Valley.

Hydro-what? That's right, hydro excavation, the science of digging holes with high-pressure water and sucking up the mud with a powerful vaccum. This allows us to find underground services, such as pipes, electrical cables and phone lines, without breaking them.

We'll be carrying out this work in sections of Port Hills Road, Maugers Drive and Scruttons Road to confirm exactly where existing services are located. We need to do this before we start exacavation works to lay the underground pipeline connecting Lyttelton Harbour's wastewater to the Christchurch Wastewater system.

Works will start from 8 April for approximately 10 days and traffic will be limited to one lane in these areas, however you'll still be able to access properties and local businesses. Our contractors will be handing out Start Works notices. Thanks for your patience while we do these works.

Installing the pipeline

This week, we’ll start installing the Heathcote Valley pipeline along the paddocks parallel to Tunnel road, starting at the Ferry road side and working towards Scrutton’s road. A trench will be dug along the padddock edge, almost 2 kilometres of pipeline installed and the ground reinstated.

What's going on in Woolston?

Our project teams will be carrying out hydro-excavation works to check what existing infrastructure is already in place, before opening up a section of the road to create an underground chamber. From here, our contractors will begin construction of the underground wastewater pipeline. We'll keep everyone updated with regular works notices.

Construction of the chamber will have some impact on traffic in the Alport Place area, but our contractors Fulton Hogan will be doing their best to minimise the disruptions. We appreciate your patience and thank you for your understanding while we build this vital part of the new wastewater system.

Roads and resealing

We'll be digging up some of Heathcote Valley's roads to lay the underground pipeline, including Port Hills Road and Mauger Drive.

Temporary works to repair road surfaces and hold existing seal over winter will continue as required and will include regular inspections of the road to correct any defects that appear, such as potholes.

Once the project is complete and the pipeline has had time to settle, a complete reseal will take place. We anticipate this will be around January 2020.

We’ll be sharing regular updates with residents before resealing works start and as the project progresses.

Setting up site offices

Parts of the Scrutton Road paddocks will soon be transformed into a site office to house staff and equipment for phase 4 of the Lyttelton Harbour Wastewater Project.

Our contractors Fulton Hogan will establish a secure site office, parking area and access point inside the paddock. This area will be used by Fulton Hogan staff for the duration of the project.

Stay informed

If you know of anyone who would like to receive this e-newsletter please ask them to email their name and residential address or organisation to infrastructurenews@ccc.govt.nz and ask to be added to the Lyttelton Harbour Wastewater project e-newsletter distribution list.

If you have any questions, or would like further information on the project, please call us on 03 941 8999 or visit www.ccc.govt.nz